TWM678954U - Improved electrostatic sand planting device - Google Patents

Abstract

An improvement to an electrostatic sanding device is mainly achieved by connecting a flipping drive mechanism to the outside of the device body. This mechanism drives the device to flip 180 degrees, allowing the sanding tray to face upwards. This facilitates placing the glued sandpaper tray on the tray, or placing the sandpaper tray on the tray before applying the glue.

Description

Improved electrostatic sand planting device

This invention is an improvement on an electrostatic sanding device, specifically one that can drive the electrostatic sanding device to rotate 180 degrees so that the sanding disc faces upwards, making it convenient to place the sandpaper disc after applying glue or to place the sandpaper disc before applying glue.

Note that the Taiwan Invention Patent Certificate No. I769101, "Method and Apparatus for Electrostatic Abrasive Placement of Sandpaper Disc," was applied for by the applicant. The electrostatic abrasive placement device in that patent mainly uses electrostatic effect to attract and stand the abrasive on the glued paper disc with the sharp corners facing outwards. When the sandpaper disc is installed on a grinding wheel at high speed to grind the workpiece, it can ensure that the abrasive is in contact with the workpiece, thereby improving the grinding and cutting ability.

The bottom surface of the electrostatic sand-planting device has a sand-planting tray. Inside the sand-planting tray is a suction cup controlled by a vacuum pump. When the sandpaper tray is placed on the sand-planting tray, it can be attracted and fixed by the suction cup. During electrostatic sand-planting, the sand-planting tray with one side coated with glue is fixed on the sand-planting tray with the glue side facing down. Then, the electrostatic sand-planting device is moved down to approach the sand tray containing sand and gravel, and the electrostatic generator is started. The sand and gravel are attracted to the glued surface of the sandpaper tray by electrostatics, thus completing the sand-planting process.

However, placing the glued sandpaper disc on the sanding disc located at the bottom of the electrostatic sander is problematic. Since the sanding disc is always facing downwards, placing the sandpaper disc on its bottom surface is difficult because the bottom of the sanding disc is lower than eye level, and the sandpaper disc is held from below, making it hard to place for the suction cup to adhere. Furthermore, the glued sandpaper disc easily gets on your hands. Also, before releasing the suction cup after sanding, you need to reach under the sanding disc to catch the sandpaper disc in time, which is quite inconvenient. In addition, during the electrostatic sanding process, when the sanding disc is facing downwards and sucking up the abrasive, high voltage electricity passes through it. If the sand-planting tray is grasped manually, there is a risk of electric shock. It is known that the above operation is not only extremely slow and time-consuming, but also poses a risk of electric shock to personnel during the operation. In view of this, the inventor has made improvements, resulting in this invention.

Therefore, the main purpose of this invention is to provide an electrostatic sanding device that allows for convenient placement of a gluing sandpaper disc on a sanding tray, or for placing the sandpaper disc on the sanding tray before applying the glue.

The main feature of this invention is that a flipping drive mechanism is connected to the electrostatic sanding device to drive the electrostatic sanding device to flip 180 degrees so that when the sanding disc is facing upwards, it is convenient to place the sandpaper disc after applying glue, or to place the sandpaper disc before applying glue.

Regarding the technical means and structure adopted by this invention to achieve the above-mentioned objectives and effects, the following embodiments are illustrated in conjunction with diagrams.

Referring to Figure 1, the body of the electrostatic sand-planting device 1 in this embodiment is connected to a tilting drive mechanism 2, and the body of the tilting drive mechanism 2 is further connected to a lifting drive mechanism 3. Wherein,

The electrostatic sand planting device 1 has a sand planting disc 10 at the bottom. The sand planting disc 10 has a plurality of suction cups 11 inside, with the suction surface of the suction cups 11 facing downward. A vacuum pump can control the suction cups 11 to have suction or release suction. A central column 12 protrudes from the center of the bottom surface of the sand planting disc 10, through which the central circular hole of the sandpaper disc 4 is inserted to correct and fix its position.

The tilting drive mechanism 2 can be a rotary pneumatic cylinder. The drive shaft 20 of the tilting drive mechanism 2 is connected to the body of the electrostatic sand planting device 1. When the tilting drive mechanism 2 is started, the drive shaft 20 can drive the electrostatic sand planting device 1 to tilt 180 degrees, so that the sand planting disc 10 faces upward.

The lifting drive mechanism 3 can be a thin pneumatic cylinder. The body of the lifting drive mechanism 3 is fixed, and the lifting actuating rod 30 is connected to the body of the tilting drive mechanism 2 so that when the lifting drive mechanism 3 is activated, the actuating rod 30 can drive the tilting drive mechanism 2 and the electrostatic sand planting mechanism 2 to move up and down together.

When applying this method, please refer to Figures 2-7.

1. Start the flipping drive mechanism 2, flip it 180 degrees so that the sand planting disc 10 of the electrostatic sand planting device 1 faces upward, and place the cut and glued sandpaper disc 4 on the sand planting disc 10 (or place the unglued sandpaper disc 4 on the sand planting disc 10 first and then apply glue), as shown in Figure 2. Then control the vacuum pump to make the suction cup 11 have suction force to hold the sandpaper disc 4.

2. Activate the flipping drive mechanism 2 to rotate the drive shaft 20 180 degrees, flipping the sand planting disc 10 of the electrostatic sand planting device 1 downwards, as shown in Figure 3.

3. Start the lifting drive mechanism 3 to extend the control lever 30, which will drive the tilting drive mechanism 2 and the electrostatic sand planting device 1 to move down together, so that the sandpaper disc 4 is close to the sandstone disc 5 containing sandstone 50. Then start the electrostatic generator, and use electrostatics to adsorb the sandstone 50 onto the glue surface of the sandpaper disc 4, as shown in Figure 4.

The lifting drive mechanism 3 is activated, and the control lever 30 is retracted, which drives the tilting drive mechanism 2 and the electrostatic sand planting device 1 to move upward together, as shown in Figure 5.

Activating the flipping drive mechanism 2 causes the drive shaft 20 to rotate 180 degrees, flipping the sand planting disc 10 of the electrostatic sand planting device 1 so that it faces upwards, as shown in Figure 6.

Remove the sandpaper disc 4 that has been coated with sand, as shown in Figure 7. This completes the sand coating process for one sandpaper disc 4. Then, replace it with another sandpaper disc 4 to coat it with sand.

As explained above, this invention, through the flipping drive mechanism 2, allows the sanding tray 10 to be flipped upwards, facilitating the placement and retrieval of the finished sandpaper tray 4. This not only saves labor and time compared to conventional working methods, but also eliminates the risk of electric shock to operators during the sanding process when retrieving the sandpaper tray 4, as the sanding tray 10 is no longer in use. Therefore, this invention is more practical and progressive than conventional methods.

In conclusion, this invention is not only novel but also practical and progressive. Therefore, we hereby apply for a utility model patent and earnestly request your kind approval.

1: Electrostatic sand planting device 10: Sand planting disc 11: Suction cup 12: Central column 2: Tilting drive mechanism 20: Drive shaft 3: Lifting drive mechanism 30: Actuator rod 4: Sandpaper disc 5: Gravel disc 50: Gravel

Figure 1 shows a structural diagram of the electrostatic sand-planting device of this invention. Figures 2 to 7 show the sequence diagram of the electrostatic sand-planting operation of this invention.

1: Electrostatic Sand Planting Device

10: Sand-planting tray

11: Suction Cup

12: Central Column

2: Tilting drive mechanism

20: Drive shaft

3: Lifting drive mechanism

30: Actuator

Claims (5)

An improvement to an electrostatic sand planting device is characterized in that the body of the electrostatic sand planting device is connected to a flipping drive mechanism, the drive shaft of which can drive the electrostatic sand planting device to flip, so that the sand planting disc at the bottom flips to face upwards. The electrostatic sand-planting device improvement as described in claim 1, wherein the body of the tilting drive mechanism is connected to the actuating rod of a lifting drive mechanism, the actuating rod being able to drive the electrostatic sand-planting device and the tilting drive mechanism to move up and down. The electrostatic sand-planting device improvement as described in claim 1 or 2, wherein the drive shaft of the flipping drive mechanism can reciprocate at a 180-degree angle. The electrostatic sand-planting device improvement as described in claim 3, wherein the tilting drive mechanism is a rotary pneumatic cylinder. The electrostatic sand-planting device improvement as described in claim 2, wherein the lifting drive mechanism is a pneumatic cylinder.